Wire feeding appliance for wire swifts



Dec. 1, 1964 H. PFEIFFER WIRE FEEDING APPLIANCE FOR WIRE SWIFTS 3 Sheets-Sheet 1 Filed Dec. 18, 1962 INVENTOR: H5 125 Pie 1 Her warez? MW Dec. 1, 1964 H. PFEIFFER WIRE FEEDING APPLIANCE FOR WIRE SWIFTS 3 Sheets-Sheet 2 Filed Dec. 18, 1962 INVENTOR: H3715 Prewf Attorne Dec. 1, 1964 H. PFEIFFER 3,159,271

WIRE FEEDING APPLIANCE FOR WIRE: SWIFTS Filed Dec. 18, 1962 3 Sheets-Sheet 3 INVENTOR: flan; Pf'ez'ffek B m aawfizgas res Ute

Maschinenfabriir Herborn, Zweigniederlassung der Berkenhofr 2: Brehes Alrtiengesellschaft, Herhorn,

Germany Filed Dec. 18, 19%, Ser. No. 245,514 Claims priority, application Germany, Dec. 1d, 1961, Mt 511,230 3 Claims. (Cl. 205-16) It is a known fact that only wire coils of limited weight can be assembled on the last drawing block of a wire drawing machine. If it is desired to handle larger weights of coils, it is necessary to feed the coils intended for the drawing block to a wire swift continuously which takes up the coils. This is a comparatively easy matter with wire drawing machines equipped with suspended drawing blocks and is still possible with wire drawing machines with horizontal drawing blocks, but on the other hand it is very difiicult and laborious with most wire drawing machines having perpendicular drawing blocks, since the coils must first be removed from above and then discharged downwardly while the plane of winding is simultaneously swivelled 180". In any case there always is the disadvantage that the diameter of coil corresponding to that of the drawing block cannot be altered. However the ability to select the diameter of coil independently of that of the drawing block is a desirable aim for several reasons, either because the machine which processes the wire still further requires a diameter of coil different from that of the drawing block, or merely toenable the wire coils to be better transferred on to the swift.

In order to deliver the coils of wire on to the swift, which are of a diameter desired at any particular time, the practice is known of letting the wire from the drawing block run over a second suspended drawing block of slight axial height, from which the coils then fall downwards on to the swift. In this connection the diameter of the suspended drawing block determines that of the coil. By changing the suspended drawing block or by providing several telescopically engaging drawing blocks, which may be used as desired, it is then possible to impart to the wire coils the desired diameter. The invention aims at designing an appliance for feeding wire to the swift which is considerably simpler in operation than the aforementioned known appliances, working without torsion and allowing in addition continuous alteration of the diameter of the coil, that is to say it is possible with the appliance in accordance with the invention to produce any desired diameter of coil.

According to the invention the wire feeding appliance is designed in such a manner that the wire coils are formed on a disk which is driven and lies within the wire coil, having a diameter of less than the minimum desired diameter of a wire coil, and the disk is associated with at least two wire bending rollers lying outside the coil, which determine together with the disk, the diameter of the coil. At least one of both of the bending rollers can be adjusted, preferably constantly, so that starting from the diameter of the disk lying within the wire coil it is possible to give wire coils any desired diameter.

In the wire feeding appliance of the invention, the coil diameter is no longer governed as before by that of the disk lying within the wire coil, but is dependent on the position of the wire bending rolls in relation to the said disk. Thus, with the invention it is possible with the assistance of a very simple appliance, to variably alter the diameter of the coils.

The disk lying within the wire coil must be driven. It is better if the bending rolls are driven but it is not absolutely necessary. The peripheral speed of the driven disk must correspond to the drawing speed of the last drawing block on the wire drawing machine, when the wire is drawn off directly from a drawing block. In order to save on the cost of an infinitely variable drive for the purpose, the wire feeding appliance is arranged in a housing which may be placed on to the spindle of the drawing block and includes a drive which may be directly coupled with the drawing spindle. The same drive may also be used for driving the bending rolls.

Several embodiments of the invention are described in the following with reference to the drawing which shows:

FIG. 1 is a side elevation of a wire feeding machine according to the invention;

FIG. 2 is a top plan view of the drawing block on the machine of FIG. 1;

FIG. 3 is a top elevation showing details of the drive for the machine of FIGS. 1 and 2;

FIG. 4 is a side elevation partly in section of the drive of FIG. 3;

FIG. 5 is a top elevation of the machine of FIG. 2 with a different position of the adjustable wire bending rolls; 1

FIG. 6 is a top elevation similar to FIGS showing the position of the adjustable wire bending rolls adjusted to a different position;

FIG. 7 is a side elevation of the machine of P16. 1 showing a modified drive for the wire swift;

FIG. 8 is a side elevation of a modified wire drawing machine with a horizontal drawing block; and

FIG. 9 is an end elevation of the machine of FIG. 8.

In the drawing 1 denotes the part of the frame of a multi-stage Wire drawing machine with a perpendicular drawing block or bobbin 2 and a spindle 3. The usual known drive provided for the spindle 3 is housed in the frame but is not shown in the drawing. The wire drawing die which is coupled to the last block is marked 4 and the wire drawn through drawing die 4 by block 2 is marked 5. A number of coils are formed on the drawing block which are to be fed on a swift 6. This latter consists of several rods 7 which are bent inwardly at an obtuse angle at the top end, their distance being suitably adjustable from the middle axis of the swift so that it is possible to produce on the same swift different diameters of coils dependent on the adjustment of the rod 7. The disk 8 is positioned in a frame 9 rotatably around its center axis. The drive itself is effected by the wire coils 10 from the wire feeding appliance. The frame 9 may be designed as a chassis.

The wire feeding appliance consists of a disk 11 the edge of which is designed as a fillet 12 so that it provides a more efficient guide for the wire 5 clinging around the disk 11. The disk 11 is positioned rotatably with its journal 13 in a housing 14 which is placed on the top end of the spindle 3 of the drawing block 2 and is fastened with an arm 15 on the frame 1. This arm prevents the housing 14 from turning and further serves to sup-port the housing. At the top end of the spindle 3 a friction belt or sprocket wheel 16 is provided with a chain 17 marked in dashes, which surrounds half of the sprocket wheel 16, and a sprocket wheel 18 connected fixedly to the shaft 13 of disk 11 so that it will not turn. Thus the disk 11. is driven direct by the spindle 3. The diameter of wheels 16 and 18 is such that the peripheral speed of the disk 11 corresponds to that of the drawing block 2.

Two bending rolls 19 and 20 are associated with the disk 11 and both rolls are positioned with their shafts 2.1 to rotate in the housing 14. Both shafts carry bevel wheels 22 which mesh with bevel wheels 23 and 24 respectively. The bevel wheel 23 is mounted on a shaft 25, FIG. 3, positioned in the housing, which carries a second bevel wheel 26 at its other end, and the bevel wheel 24, adjustable longitudinally, but unable to rotate, on a 29 mounted on the shaft 13 of disk 11.

' i As shown in FIG. 2 the ions diameters d and D respectively diameters of wire.

wire the swift is actuated by the coils themselves. Since 'the drawing block 40 has a large diameter for thick shaft 27 likewise is positioned in the housing 14, and carries at its other end a bevel wheel 23. Both bevel wheels 26 and 28 are driven by a common bevel wheel The shaft 21 of the bending roll 24 may be adjusted in a slitdd of the housing 14, FIG. 4, that is in a radial direction in relation to the disk 11, as shown by the double arrow E in FIG.2.

Z first passes a known straightening appliance 39 consisting of several rollers and fastened on to housing 14. This removes the unevenness in the wire which is imparted to it by the block 2. The wire passes around the disk 11 and touches it at the point marked A (FIG. 5). i

It then liesatB contiguous to the bending roller 19 and at C' on the bending roller 2%. The position of these three points A, B and C to each other, determines the diameter d or the wire coil marked lit) in FIG. 2. If the roll 20 is moved outwardly as shown by the arrow in FIG. 5 similar to FIG. 2, the effect of this is to give the wire coils the diameter D which is considerably greater. This correspondsto the coils it). moving the roll 20 to produce coils, starting with one of the smallest corresponding approximately to the disk 11,

with diameters which are constantly varying. The largest fdiameter coil is limited solely by the length of slit 3%.

Instead of displacing the roll 29 it is also possible to position it so as to rotate around shafit 13 as shown in FIG. 6. The housing extension marked 14' is now' -represented in FIG. 6 and any position in between. It

is also possible in this way to produce wire coils of varwhich are marked and 19 respectively. a v t FIG. 7 shows a drive for the swift 6. The disk 8 carrying the rod 7 is positioned rotatably in the base 32 of a fi'ame 33 which replaces the arm in FIG. 1. The

wire 5 emerging from the disk It isthus possible by journal 31, carries a driving pulley, a sprocket Wheel 34 may also be applied to wire drawing machines with horizontal and suspending drawing blocks. FIGS. 8 and 9 show the frame 41 of a wire drawing machine having horizontal drawing block 4%. The block 49 is driven by a motor 42 through a gear not shown in the housing 41. The wire 5 is drawn by thedrawing block so through a die positioned in the die holder 43. The disc '11 is positioned in a flame 4-4 fastened to the foundation ot the drawing machined-l. The bending rolls 19 and 20 are so positioned thattthe bending roll 19 is rotatably mounted in an extension 45 of the frame 44 and .the

, bending roll 20 is mounted in an extension 46 which may 3 be swivelled around the shaft 130i disk ii.

11 isialso driven by the spindle of the drawing block 40 with the drive not shown in the drawing.

The wire coils 10 are bent in the way described, that is the wire coils first are-drawn off ina horizontal directionas shown in FIG. '9 and reach swift 6. It is not necessary for'lthe swifit to be driven. Wire drawing machines with horizontal drawing blocks are mainly used for large When handlingf large diameters of wires, the straightening appliance is not shown, but can be provided should the diameter of the coil be greater than that of the drawing block.

In order to obtain a greater degree of eificiency'of The disk roll 29 by means of a suitable drive between two chosen limits 'backwardly and forwardly; The diameter of'the wire coils then alters constantly withthe result that the wire coils come to rest on the swift in layers. The other alternative is to design the drive shown'in FIG. 7 in such a Way that the transmission ratio between the disks 36 a and 34' alters constantly that is, the switch is driven at a 'speed ot rotation which constantly varies between two limits. If the swift worksfaster than is commensurate with the wire drawing speed, the coils it) are drawn tighter together, if it runs slower than the drawing speed, the coils become less tight. 7 It is also possible in this way to obtain wire coils of varying diameter which are delivered to the swift in layers. Drives with constantly altering transmission ratios are'known as such, for example separated V-belt pulleys'of whichthe' spaces from each other may be altered.

I claim: V

1. A wire feeding apparatus for use'ina Wire drawing machine to feed the drawn wire from the final drawing die to a skip, comprising a frame, a bobbin rotatably 'mounted in the frame to receivewire from said die, a ro-' tatably driven disk to receive the wire from the bobbin, at least two bending rolls cooperatingwith the disk to bend the wire into coils, a rotatable skip to receive the wire in coils from said disk and bending rolls, the disk being of smaller diameter than the coils thereon and the bending rolls lying outside 'said coils, a housing supported on the bo-bbin'shaft and supporting a disk journal pin and the shafts of the bending rolls, and a drive mechanism ineluding an endless belt type drive between said bobbin and said disk and bending rolls and'carried by said housing, one of said bending rolls being adjustable relative to thedisk and said bending rolls and disk being driven by said drivemechanism; V

2.' A wire feeding apparatus forms in wire drawing machines to feed the drawn wire from the final drawing die to a skip, comprising a frame, a bobbin rotatably mounted in the frame to receive the wire from thesaid die, arotaltably driven disk to receive the wire from, the

bobbin, at least two bending rolls rotaltably driven and cooperating with the disk to bendthewire into coils,

and a rotatable skip to receive the wire in coils from the V disk and bending rolls, the disk being of smaller diameter than the coils thereon and the bending rolls being disposedto, lie outside the coils produced thereby,.alt least one of the-two bending'rolls being adjustable as to the distance from the axis of rotation of the disk.

I 3. wire feeding apparatus for use in wire drawing j machines to feed the drawn wire from the final drawing (116 to a Sk-lP, comprising a frame, a bobbin rotatably mounted in thefrarne Ito receiveythewire from the said I die, a rotatably driven disk to receive the Wi-ICfIOill the" bobbin, at least two bending rolls rotatably driven and cooperatlng with the disk to bend the wire into'coils, and a rotatable skip to receive the wirein coilsfrom the disk and bending rolls, the disk being ofsrnaller diameter than the coils'thereon and the bending rolls being disposed to lie outside the coils produced thereby, at least 9 one of the two bending-rolls being'adjustable by swiveling I about the axis of rotation of the disk.

7 References Cited by the Examiner UNITED STATES PATENTS MICHAEL V- BRINDISI, Primary Examiner. 'H- T CHARLES WJLANHAM, Examiner.

: 8/30 Hon-lg 205-16 it 

1. A WIRE FEEDING APPARATUS FOR USE IN A WIRE DRAWING MACHINE TO FEED THE DRAWN WIRE FROM THE FINAL DRAWING DIE TO A SKIP, COMPRISING A FRAME, A BOBBIN ROTATABLY MOUNTED IN THE FRAME TO RECEIVE WIRE FROM SAID DIE, A ROTATABLY DRIVEN DISK TO RECEIVE THE WIRE FROM THE BOBBIN, AT LEAST TWO BENDING ROLLS COOPERATING WITH THE DISK TO BEND THE WIRE INTO COILS, A ROTATABLE SKIP TO RECEIVE THE WIRE IN COILS FROM SAID DISK AND BENDING ROLLS, THE DISK BEING OF SMALLER DIAMETER THAN THE COILS THEREON AND THE BENDING ROLLS LYING OUTSIDE SAID COILS, A HOUSING SUPPORTED ON THE BOBBIN SHAFT AND SUPPORTING A DISK JOURNAL PIN AND THE SHAFTS OF THE BENDING ROLLS, AND A DRIVE MECHANISM INCLUDING AN ENDLESS BELT TYPE DRIVE BETWEEN SAID BOBBIN AND SAID DISK AND BENDING ROLLS AND CARRIED BY SAID HOUSING, ONE OF SAID BENDING ROLLS BEING ADJUSTABLE RELATIVE TO THE DISK AND SAID BENDING ROLLS AND DISK BEING DRIVEN BY SAID DRIVE MECHANISM. 